Home / 384,877.47-531,121.73-215,127.39

Finding the Fourth Proportional to 384,877.47, 531,121.73 and 215,127.39

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Solution

The fourth proportional to 384,877.47, 531,121.73 and 215,127.39 is: 296,870.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,877.47 : 531,121.73 = 215,127.39 : x
  2. Step 2: Convert to fraction form
    384,877.47/531,121.73 = 215,127.39/x
  3. Step 3: Cross multiply
    384,877.47x = 531,121.73 × 215,127.39
  4. Step 4: Simplify right side
    384,877.47x = 114,258,830,471.55
  5. Step 5: Solve for x
    x = 114,258,830,471.55/384,877.47
  6. Step 6: Final answer
    x = 296,870.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.